LX7203 Datasheet, PDF (1/7 Pages) Microsemi Corporation – EMI Filter & ESD Protection for Up Stream USB Ports

LX7203-xx
INTEGRATED PRODUCTS
EMI Filter & ESD Protection for Up Stream USB
Ports
PRODUCTION DATA SHEET
DESCRIPTION
The LX7203 is an integrated The 47 pF capacitor completes the
Universal Serial Bus (USB) line high frequency filter and controls the
termination device with an EMI filter edge rate of the USB signals The
and ESD protection diodes. This LX7203 protects both D+ and D- data
device offers a cost effective and lines and the voltage bus from ESD.
compact solution for one USB The TVS protection diodes exceed the
upstream port. The USB v1.1 requirements of IEC61000-4-2, level 4,
specification requires line termination 15kV (air discharge) and 8kV (contact
resistors on both the D+ and D- lines. discharge).The integrated configuration
These resistors ensure signal integrity of the LX7203 minimizes board space
by matching the cable impedance to and allows for ideal placement near the
that of the differential driver. The 1.5 connector. The LX7203 is ideal for use
kΩ pull-up resistor identifies the in USB hubs, peripherals and portable
appropriate data line for full speed or appliances
low speed operation.
IMPORTANT: For the most current data, consult MICROSEMI’s website: http://www.microsemi.com
T_J (°C)
-40 to 125
-40 to 125
PACKAGE ORDER INFO
Plastic
SM _{6-Pin SC70}
Package Tape & Reel Quantity
Marking (Reel Size)
LX7203-15ISM
315
LX7203-22ISM
322
3K (7inches)
Note: Append the letter “T” to the part number
For Tape & Reel Ordering
KEY FEATURES
Small SC70-6L Package
Bi-directional EMI/RFI low-pass
filter
Line termination with integrated
ESD protection
Low TVS operating voltage
(5.25V)
Low leakage current
Integrated single die construction
Crosses From Semtech STF203
APPLICATIONS
USB Ports
Peripherals
Computers and Printers
Mobile phones
Pagers and PDA’s
Digital Cameras
BENEFITS
Filter response characterized up
to 6 GHz
<2dB insertion loss in the pass
band
>20dB attenuation in the 800-
900 MHz range
>12dB attenuation in the WLAN
frequencies of 2.4GHz and 5.0-
6.0 GHz
D in
from
connector
1.5K
V_BUS
5
D in
from
connector
PRODUCT HIGHLIGHT
Rs
C_EDGE
D out
to IC
2
fr^Dom^{IN 1}
connector
2
GND
R_S
C
R_PU
?
6 _DtoOIUCT
5
V_BUS
C_EDGE
Rs
Circuit Diagram
D out
to IC
fro^Dm^{IN 3}
connector
C
R_S
4 _DtoOIUCT
Functional Schematic with PinOut
Copyright  2002
Rev. 1.0a, 2002-10-22
Microsemi
Integrated Products Division
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: [phone]
Page 1